On a Raspbian linux system I have been using geth --testnet --syncmode light to sync the Blockchain in one terminal and running geth --testnet attach in the other, but when the Blockchain is synced I ...

I created ERC20 compliant token on Ropsten testnet. I set in constructor that all of the token supply is added to my wallet address. When I open the metamaks I see that I have the tokens. Here's the ...

There are a couple of commands, reproduced below, which I've used successfully in the truffle console, executing on testrpc, which work and elicit the responses that I expect.
How can I change them ...

I'm testing my smart contract on ropsten and I have written an async function that lets me send TRANSACTION transactions from TRANSACTION different accounts. For some reason when TRANSACTION > 20 i ...

I'm having a weird issue with the code below in that sometimes it works and sometimes it doesn't. It seems more apparent when TRANSACTIONS is set to a larger number. I have had it fail AND pass with ...

I'm using Parity ( "ropsten" test net), Nodejs and web3js to deploy smart contract from my system. Parity is synchronised in test mode, but when I run below code using Nodejs, it gave me a transaction ...

I am currently syncing a Geth node with the Ropsten network. Currently the download in the terminal show a neverending stream of Imported new state entries. I understand that I have to wait for all of ...

i have a problem with my Geth Ropsten node.
Time between importing new segments of chain is too long.
For example logs from my docker container below
geth-testnet_1_6d184080c9e1 | INFO [02-11|13:30:...

i got "web3.exceptions.BadFunctionCallOutput: Could not transact with/call contract function, is contract deployed correctly and chain synced?
" error when try to run this code:
from web3.auto.infura ...

I am trying to redeploy a contract on Ropsten Testnet using the command:
truffle migrate --reset -f 1567182283 --network ropsten
Here, "1567182283" is the prefix of my migration file. Upon executing,...

Since ether, on the ropsten network, virtually isn't worth anything does the gas price for transactions affect the priority in which they're mined? I'm asking because web3.eth.getGasPrice() (on the ...

I understand this topic has been discussed before, but my question is specific to web3.py. How can I interact with function of already deployed ethereum contracts on Ropsten TestNet. my code runs with ...

For some testing I deployed several contracts on Ropsten Testnet using web3.py but now if I want to execute them or call any function from them, how can I do this? I don't have ABI as I did several ...

I published an ERC 20 token on Ropsten. The token's total supply, name and symbol shows on the self page (https://ropsten.etherscan.io/token/..) but the holders number and transfers are not shown. The ...

I'm trying to obtain all the transactions of a contract, but in all cases I only obtained [] or undefined.
I'm following this posts:
Common useful JavaScript snippets for geth
web3 filter option not ...

i'm using metamask with ropsten. deployed my contract on ropsten using remix. for the backend i used infura to create instance of web3.
ew Web3(new Web3.providers.HttpProvider('https://ropsten.infura....

I have a Javascript frontend that passes records in a JSON to the backend via Express to be deployed to the blockchain (currently using Rinkeby) with truffle-hdwallet-provider. This appears to work ...